rt2x00: Introduce sta_add/remove callbacks
This implements a basic sta_add and sta_remove callback. Introduce a new
structure rt2x00_sta and ask mac80211 to allocate it as private part of
its ieee80211_sta. rt2x00_sta only contains the WCID for now.
The sta_add callback allows the driver to assign a WCID to a station
that is currently being added. The same wcid is also passed to the
sta_remove callback one mac80211 removes this STA.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index d454ec8..3b71d79 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -512,6 +512,19 @@
};
/*
+ * Private structure for storing STA details
+ * wcid: Wireless Client ID
+ */
+struct rt2x00_sta {
+ int wcid;
+};
+
+static inline struct rt2x00_sta* sta_to_rt2x00_sta(struct ieee80211_sta *sta)
+{
+ return (struct rt2x00_sta *)sta->drv_priv;
+}
+
+/*
* rt2x00lib callback functions.
*/
struct rt2x00lib_ops {
@@ -620,6 +633,11 @@
void (*config) (struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf,
const unsigned int changed_flags);
+ int (*sta_add) (struct rt2x00_dev *rt2x00dev,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta);
+ int (*sta_remove) (struct rt2x00_dev *rt2x00dev,
+ int wcid);
};
/*
@@ -1267,6 +1285,10 @@
#else
#define rt2x00mac_set_key NULL
#endif /* CONFIG_RT2X00_LIB_CRYPTO */
+int rt2x00mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta);
+int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta);
void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw);
void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw);
int rt2x00mac_get_stats(struct ieee80211_hw *hw,
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 634b084..e1fb2a8 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -931,6 +931,11 @@
rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE;
/*
+ * Tell mac80211 about the size of our private STA structure.
+ */
+ rt2x00dev->hw->sta_data_size = sizeof(struct rt2x00_sta);
+
+ /*
* Allocate tx status FIFO for driver use.
*/
if (test_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags)) {
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index 9db9378..6a03f93 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -552,6 +552,39 @@
EXPORT_SYMBOL_GPL(rt2x00mac_set_key);
#endif /* CONFIG_RT2X00_LIB_CRYPTO */
+int rt2x00mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct rt2x00_dev *rt2x00dev = hw->priv;
+ struct rt2x00_sta *sta_priv = sta_to_rt2x00_sta(sta);
+
+ /*
+ * If there's no space left in the device table store
+ * -1 as wcid but tell mac80211 everything went ok.
+ */
+ if (rt2x00dev->ops->lib->sta_add(rt2x00dev, vif, sta))
+ sta_priv->wcid = -1;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rt2x00mac_sta_add);
+
+int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct rt2x00_dev *rt2x00dev = hw->priv;
+ struct rt2x00_sta *sta_priv = sta_to_rt2x00_sta(sta);
+
+ /*
+ * If we never sent the STA to the device no need to clean it up.
+ */
+ if (sta_priv->wcid < 0)
+ return 0;
+
+ return rt2x00dev->ops->lib->sta_remove(rt2x00dev, sta_priv->wcid);
+}
+EXPORT_SYMBOL_GPL(rt2x00mac_sta_remove);
+
void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw)
{
struct rt2x00_dev *rt2x00dev = hw->priv;